Fix Per Key LED Indicator Callbacks (#18450)

Co-authored-by: Dasky <32983009+daskygit@users.noreply.github.com>
Co-authored-by: Nick Brassel <nick@tzarc.org>

keyboards/dztech/dz60rgb/keymaps/mekanist/keymap.c

@@ -57,8 +57,7 @@ void rgb_matrix_layer_helper (uint8_t red, uint8_t green, uint8_t blue) {
   }
 }
 
-void rgb_matrix_indicators_user(void)
-{
+bool rgb_matrix_indicators_user(void) {
 	uint8_t this_led = host_keyboard_leds();
 
 	if (!g_suspend_state && rgb_matrix_config.enable) {
@@ -151,6 +150,7 @@ void rgb_matrix_indicators_user(void)
 		rgb_matrix_set_color(62, 0x00, 0x00, 0x00);
 		break;
 	}
+    return false;
 }